Heat gun



FIG. 1 is a perspective view of a heat gun

FIG. 2 is a left side view of the heat gun shown in FIG. 1.

FIG. 3 is a right side view of the heat gun shown in FIG. 1.

FIG. 4 is a front view of the heat gun shown in FIG. 1.

FIG. 5 is a back view of the heat gun shown in FIG. 1.

FIG. 6 is a top view of the heat gun shown in FIG. 1; and,

FIG. 7 is a bottom view of the heat gun shown in FIG. 1.

The elements shown in broken lines are included for the purpose of illustrating environment and form no part of the claimed design. 

CLAIM I claim the ornamental design for a heat gun, as shown and described in FIGS. 1-7. 